采用单片机为控制核心，利用超声波传感器检测道路障碍，控制电动小汽车的自动避障，快慢速行驶，自动停车，并自动记录时间、里程和速度，自动寻迹和寻光功能。-Single-chip computer to control the core, the use of ultrasonic sensors detect obstacles roads, control of electric cars automatic obstacle avoidance, fast low traffic speeds,